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Finding the Fourth Proportional to 8,700.25, 12,001.85 and 5,508.14

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Solution

The fourth proportional to 8,700.25, 12,001.85 and 5,508.14 is: 7,598.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.25 : 12,001.85 = 5,508.14 : x
  2. Step 2: Convert to fraction form
    8,700.25/12,001.85 = 5,508.14/x
  3. Step 3: Cross multiply
    8,700.25x = 12,001.85 × 5,508.14
  4. Step 4: Simplify right side
    8,700.25x = 66,107,870.06
  5. Step 5: Solve for x
    x = 66,107,870.06/8,700.25
  6. Step 6: Final answer
    x = 7,598.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.